OUI Lookup
004039
OPTEC DAIICHI DENKO CO., LTD.
Manufacturer Information
- OUI Prefix
- 004039
- Manufacturer
- OPTEC DAIICHI DENKO CO., LTD.
- Address
- FIBER OPTICS & TELECOM. DIV. JAPAN
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 004039
The OUI prefix 004039 is assigned to OPTEC DAIICHI DENKO CO., LTD., based in FIBER OPTICS & TELECOM. DIV. JAPAN . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to OPTEC DAIICHI DENKO CO., LTD..